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ELANSC310 Datasheet(PDF) 92 Page - Advanced Micro Devices

No. de pieza ELANSC310
Descripción Electrónicos  Single-Chip, 32-Bit, PC/AT Microcontroller
PDF  119 Pages
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Fabricante Electrónico  AMD [Advanced Micro Devices]
Página de inicio  http://www.amd.com
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ELANSC310 Datasheet(HTML) 92 Page - Advanced Micro Devices

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92
Élan™SC310 Microcontroller Data Sheet
PREL IMINARY
Notes:
These timings are based on 33-MHz operation (70 ns or faster DRAM recommended).
Table 46.
DRAM Memory Interface, Page Hit and Refresh Cycle (See Figures 36 and 37)
Symbol
Parameter Description
Notes
Preliminary
Unit
Min
Max
t30
MA valid setup to RAS Low
0
ns
t31
MA hold from RAS Low
10
ns
t32
MA setup to CAS Low
0
ns
t37
CAS precharge (Page mode)
10
ns
t38
MA hold from CAS active
15
ns
t39
RAS to CAS delay
20
ns
t41
CAS pulse width (page hit)
20
10,000
ns
t42
MWE setup to CAS Low (page hit)
0
ns
t43
MWE hold from CAS Low
15
ns
t45
CAS cycle time (Page mode)
45
ns
t46
CAS Low to D15–D0 valid (read access time)
20
ns
t47
D15–D0 hold from CAS High (read)
0
ns
t48
D15–D0 setup to CAS Low (write)
0
ns
t49
D15–D0 hold from CAS Low (write)
15
ns
t50
CAS Low to RAS Low (refresh)
10
ns
t51
CAS hold from RAS Low (refresh)
70
ns
t53
RAS pulse width (suspend refresh)
80
ns



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